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a70bb580bf
Pull devicetree updates from Rob Herring: - Refine reserved memory nomap handling - Merge some PCI and non-PCI address handling implementations - Simplify of_address.h header ifdefs - Improve printk handling of some 64-bit types - Convert adi,adv7511, Arm ccree, Arm SCMI, Arm SCU, Arm TWD timer, Arm VIC, arm,sbsa-gwdt, Arm/Amlogic SCPI, Aspeed I2C, Broadcom iProc PWM, linaro,optee-tz, MDIO GPIO, Mediatek RNG, MTD physmap, NXP pcf8563/pcf85263/pcf85363, Renesas TPU, renesas,emev2-smu, renesas,r9a06g032-sysctrl, sysc-rmobile, Tegra20 EMC, TI AM56 PCI, TI OMAP mailbox, TI SCI bindings, virtio-mmio, Zynq FPGA, and ZynqMP RTC to DT schema - Convert mux and mux controller bindings to schema. This includes MDIO IIO, and I2C muxes. - Add Arm PL031 RTC binding schema - Add vendor prefixes for StarFive Technology Co. Ltd. and Insignal Ltd - Fix some stale doc references - Remove stale property-units.txt. Superseded by schema in dt-schema repo. - Fixes for 'unevaluatedProperties' handling (enabled with experimental json-schema support) - Drop redundant usage of minItems and maxItems across the tree - Update some examples to use bindings with a schema * tag 'devicetree-for-5.14' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux: (83 commits) dt-bindings: Fix 'unevaluatedProperties' errors in DT graph users dt-bindings: display: renesas,du: Fix 'ports' reference dt-bindings: media: adv7180: Add missing video-interfaces.yaml reference dt-bindings: crypto: ccree: Convert to json-schema dt-bindings: fpga: zynq: convert bindings to YAML dt-bindings: rtc: zynqmp: convert bindings to YAML dt-bindings: interrupt-controller: Convert ARM VIC to json-schema of: of_reserved_mem: mark nomap memory instead of removing of: of_reserved_mem: only call memblock_free for normal reserved memory dt-bindings: Drop redundant minItems/maxItems dt-bindings: spmi: Correct 'reg' schema of: reserved-memory: Add stub for RESERVEDMEM_OF_DECLARE() dt-bindings: clk: vc5: Fix example dt-bindings: timer: renesas,tmu: add r8a779a0 TMU support dt-bindings: drm: bridge: adi,adv7511.txt: convert to yaml dt-bindings: PCI: ti,am65: Convert PCIe host/endpoint mode dt-bindings to YAML of: Remove superfluous casts when printing u64 values of: Fix truncation of memory sizes on 32-bit platforms dt-bindings: rtc: nxp,pcf8563: Absorb pcf85263/pcf85363 bindings dt-bindings: pwm: Use examples with documented/matching schema ...
330 lines
8.5 KiB
YAML
330 lines
8.5 KiB
YAML
# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
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%YAML 1.2
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---
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$id: http://devicetree.org/schemas/iio/adc/st,stm32-dfsdm-adc.yaml#
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$schema: http://devicetree.org/meta-schemas/core.yaml#
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title: STMicroelectronics STM32 DFSDM ADC device driver
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maintainers:
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- Fabrice Gasnier <fabrice.gasnier@st.com>
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- Olivier Moysan <olivier.moysan@st.com>
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description: |
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STM32 DFSDM ADC is a sigma delta analog-to-digital converter dedicated to
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interface external sigma delta modulators to STM32 micro controllers.
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It is mainly targeted for:
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- Sigma delta modulators (motor control, metering...)
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- PDM microphones (audio digital microphone)
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It features up to 8 serial digital interfaces (SPI or Manchester) and
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up to 4 filters on stm32h7 or 6 filters on stm32mp1.
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Each child node matches with a filter instance.
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properties:
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compatible:
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enum:
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- st,stm32h7-dfsdm
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- st,stm32mp1-dfsdm
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reg:
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maxItems: 1
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clocks:
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items:
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- description:
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Internal clock used for DFSDM digital processing and control blocks.
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dfsdm clock can also feed CLKOUT, when CLKOUT is used.
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- description: audio clock can be used as an alternate to feed CLKOUT.
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minItems: 1
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clock-names:
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items:
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- const: dfsdm
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- const: audio
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minItems: 1
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"#address-cells":
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const: 1
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"#size-cells":
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const: 0
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spi-max-frequency:
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description:
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SPI clock OUT frequency (Hz). Requested only for SPI master mode.
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This clock must be set according to the "clock" property.
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Frequency must be a multiple of the rcc clock frequency.
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If not, SPI CLKOUT frequency will not be accurate.
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maximum: 20000000
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required:
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- compatible
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- reg
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- clocks
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- clock-names
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- "#address-cells"
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- "#size-cells"
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additionalProperties: false
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patternProperties:
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"^filter@[0-9]+$":
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type: object
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description: child node
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properties:
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compatible:
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enum:
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- st,stm32-dfsdm-adc
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- st,stm32-dfsdm-dmic
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reg:
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description: Specifies the DFSDM filter instance used.
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maxItems: 1
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interrupts:
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maxItems: 1
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st,adc-channels:
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description: |
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List of single-ended channels muxed for this ADC.
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On stm32h7 and stm32mp1:
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- For st,stm32-dfsdm-adc: up to 8 channels numbered from 0 to 7.
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- For st,stm32-dfsdm-dmic: 1 channel numbered from 0 to 7.
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$ref: /schemas/types.yaml#/definitions/uint32-array
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items:
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minimum: 0
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maximum: 7
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st,adc-channel-names:
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description: List of single-ended channel names.
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st,filter-order:
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description: |
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SinC filter order from 0 to 5.
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- 0: FastSinC
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- [1-5]: order 1 to 5.
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For audio purpose it is recommended to use order 3 to 5.
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$ref: /schemas/types.yaml#/definitions/uint32
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items:
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minimum: 0
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maximum: 5
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"#io-channel-cells":
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const: 1
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st,adc-channel-types:
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description: |
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Single-ended channel input type.
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- "SPI_R": SPI with data on rising edge (default)
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- "SPI_F": SPI with data on falling edge
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- "MANCH_R": manchester codec, rising edge = logic 0, falling edge = logic 1
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- "MANCH_F": manchester codec, rising edge = logic 1, falling edge = logic 0
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items:
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enum: [ SPI_R, SPI_F, MANCH_R, MANCH_F ]
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$ref: /schemas/types.yaml#/definitions/non-unique-string-array
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st,adc-channel-clk-src:
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description: |
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Conversion clock source.
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- "CLKIN": external SPI clock (CLKIN x)
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- "CLKOUT": internal SPI clock (CLKOUT) (default)
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- "CLKOUT_F": internal SPI clock divided by 2 (falling edge).
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- "CLKOUT_R": internal SPI clock divided by 2 (rising edge).
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items:
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enum: [ CLKIN, CLKOUT, CLKOUT_F, CLKOUT_R ]
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$ref: /schemas/types.yaml#/definitions/non-unique-string-array
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st,adc-alt-channel:
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description:
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Must be defined if two sigma delta modulators are
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connected on same SPI input.
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If not set, channel n is connected to SPI input n.
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If set, channel n is connected to SPI input n + 1.
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type: boolean
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st,filter0-sync:
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description:
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Set to 1 to synchronize with DFSDM filter instance 0.
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Used for multi microphones synchronization.
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type: boolean
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dmas:
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maxItems: 1
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dma-names:
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items:
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- const: rx
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required:
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- compatible
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- reg
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- interrupts
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- st,adc-channels
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- st,adc-channel-names
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- st,filter-order
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- "#io-channel-cells"
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allOf:
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- if:
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properties:
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compatible:
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contains:
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const: st,stm32-dfsdm-adc
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- then:
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properties:
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st,adc-channels:
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minItems: 1
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maxItems: 8
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st,adc-channel-names:
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minItems: 1
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maxItems: 8
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st,adc-channel-types:
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minItems: 1
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maxItems: 8
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st,adc-channel-clk-src:
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minItems: 1
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maxItems: 8
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io-channels:
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description:
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From common IIO binding. Used to pipe external sigma delta
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modulator or internal ADC output to DFSDM channel.
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required:
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- io-channels
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- if:
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properties:
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compatible:
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contains:
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const: st,stm32-dfsdm-dmic
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- then:
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properties:
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st,adc-channels:
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maxItems: 1
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st,adc-channel-names:
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maxItems: 1
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st,adc-channel-types:
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maxItems: 1
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st,adc-channel-clk-src:
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maxItems: 1
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required:
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- dmas
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- dma-names
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patternProperties:
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"^dfsdm-dai+$":
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type: object
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description: child node
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properties:
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compatible:
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enum:
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- st,stm32h7-dfsdm-dai
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"#sound-dai-cells":
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const: 0
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io-channels:
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description:
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From common IIO binding. Used to pipe external sigma delta
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modulator or internal ADC output to DFSDM channel.
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required:
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- compatible
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- "#sound-dai-cells"
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- io-channels
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allOf:
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- if:
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properties:
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compatible:
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contains:
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const: st,stm32h7-dfsdm
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- then:
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patternProperties:
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"^filter@[0-9]+$":
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properties:
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reg:
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items:
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minimum: 0
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maximum: 3
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- if:
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properties:
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compatible:
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contains:
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const: st,stm32mp1-dfsdm
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- then:
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patternProperties:
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"^filter@[0-9]+$":
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properties:
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reg:
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items:
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minimum: 0
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maximum: 5
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examples:
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- |
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#include <dt-bindings/interrupt-controller/arm-gic.h>
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#include <dt-bindings/clock/stm32mp1-clks.h>
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dfsdm: dfsdm@4400d000 {
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compatible = "st,stm32mp1-dfsdm";
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reg = <0x4400d000 0x800>;
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clocks = <&rcc DFSDM_K>, <&rcc ADFSDM_K>;
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clock-names = "dfsdm", "audio";
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#address-cells = <1>;
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#size-cells = <0>;
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dfsdm0: filter@0 {
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compatible = "st,stm32-dfsdm-dmic";
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reg = <0>;
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interrupts = <GIC_SPI 110 IRQ_TYPE_LEVEL_HIGH>;
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dmas = <&dmamux1 101 0x400 0x01>;
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dma-names = "rx";
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#io-channel-cells = <1>;
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st,adc-channels = <1>;
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st,adc-channel-names = "dmic0";
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st,adc-channel-types = "SPI_R";
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st,adc-channel-clk-src = "CLKOUT";
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st,filter-order = <5>;
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asoc_pdm0: dfsdm-dai {
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compatible = "st,stm32h7-dfsdm-dai";
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#sound-dai-cells = <0>;
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io-channels = <&dfsdm0 0>;
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};
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};
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dfsdm_pdm1: filter@1 {
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compatible = "st,stm32-dfsdm-adc";
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reg = <1>;
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interrupts = <GIC_SPI 111 IRQ_TYPE_LEVEL_HIGH>;
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dmas = <&dmamux1 102 0x400 0x01>;
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dma-names = "rx";
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#io-channel-cells = <1>;
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st,adc-channels = <2 3>;
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st,adc-channel-names = "in2", "in3";
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st,adc-channel-types = "SPI_R", "SPI_R";
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st,adc-channel-clk-src = "CLKOUT_F", "CLKOUT_F";
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io-channels = <&sd_adc2 &sd_adc3>;
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st,filter-order = <1>;
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};
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};
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...
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